Looks like Guerilla Games has two games currently in production...

So Guerilla Games (Killzone, Horizon) made some splashes last year by hiring some notable developers with strong multiplayer background. This made more than a few people speculate that Horizon Zero Dawn 2 might be getting a multiplayer mode.

It looks like instead, Guerilla is working on a totally separate, non Horizon related game as well. Personally, I thought it always made sense to keep Horizon single player and release a free to play multiplayer game (ala Fortnite) near the PS5s launch. Looks like things might be headed that way.

https://mobile.twitter.com/foxygames_uk/status/1235521817835638785?ref_src=twsrc%5Etfw%7Ctwcamp%5Etweetembed%7Ctwterm%5E1235521817835638785&ref_url=https%3A%2F%2Fs9e.github.io%2Fiframe%2F2%2Ftwitter.min.html%231235521817835638785